[7] Wardian also is the 2007 JFK 50 Mile champion, and 6-time winner of the National Marathon in Washington, D.C., winning 2006–2008 and 2010-2012.

Wardian set the world record for fastest marathon while pushing a jogging stroller from May 2007 to November 2009.

[15][19] Some of the notable ultra-marathons Wardian has completed include the Marathon des Sables, the Western States Endurance Run, the Himalayan 100 Mile Stage Race, and the Vermont 100 Mile Endurance Run.

[20][21][22] The United States Track and Field Association named Wardian the 2008 and 2009 Ultra Runner of the year.

[26] In 2010, Wardian finished third at the Marathon des Sables in 23 hours 1 minute 3 seconds, which was the best time ever by an American.

[27] In February 2011, the International Association of Ultrarunners named Wardian its inaugural Athlete of the Year.

[33] In January 2017, Wardian ran seven marathons in seven days on seven continents in a record average speed of 2:45.

On October 27, 2019, Wardian won the inaugural Marine Corps Marathon 50K with a time of 3:11:52.

[36] In 2020, Wardian won the Quarantine Backyard Ultra, running nearly 263 miles over the course of 63 hours without sleeping in a repetitive neighborhood loop in Arlington, VA to follow social distancing guidelines during the coronavirus pandemic.

“To be able to share a marathon with Pierce is just a dream come true and something I've wanted to do for a long time,” Wardian told ABC affiliate WJLA-TV.

[39] Wardian is a graduate of Oakton High School and Michigan State University, where he played for the lacrosse team.